Engineers can open them too - http://www.wowhead.com/item=77532 so that's three options for opening a lockbox. If you are so antisocial that you don't know any engineers, blacksmiths or rogues perhaps you're playing the game wrong.

Engineers can open them too - http://www.wowhead.com/item=77532 so that's three options for opening a lockbox. If you are so antisocial that you don't know any engineers, blacksmiths or rogues perhaps you're playing the game wrong.

Wow, I'm an idiot. I probably trained that on both my engs and didn't realize I had it. Makes sense, though, because I remember using the bombs to blast open lockboxes in vanilla.